// import parseTime, formatTime and set to filter
export { parseTime, formatTime } from '@/utils'

/**
 * Show plural label if time is plural number
 * @param {number} time
 * @param {string} label
 * @return {string}
 */
function pluralize(time, label) {
	if (time === 1) {
		return time + label
	}
	return time + label + 's'
}

/**
 * @param {number} time
 */
export function timeAgo(time) {
	const between = Date.now() / 1000 - Number(time)
	if (between < 3600) {
		return pluralize(~~(between / 60), ' minute')
	} else if (between < 86400) {
		return pluralize(~~(between / 3600), ' hour')
	} else {
		return pluralize(~~(between / 86400), ' day')
	}
}

/**
 * Number formatting
 * like 10000 => 10k
 * @param {number} num
 * @param {number} digits
 */
export function numberFormatter(num, digits) {
	const si = [
		{ value: 1e18, symbol: 'E' },
		{ value: 1e15, symbol: 'P' },
		{ value: 1e12, symbol: 'T' },
		{ value: 1e9, symbol: 'G' },
		{ value: 1e6, symbol: 'M' },
		{ value: 1e3, symbol: 'k' }
	]
	for (let i = 0; i < si.length; i++) {
		if (num >= si[i].value) {
			return (num / si[i].value).toFixed(digits).replace(/\.0+$|(\.[0-9]*[1-9])0+$/, '$1') + si[i].symbol
		}
	}
	return num.toString()
}

/**
 * 10000 => '10,000'
 * @param {number} num
 */
export function toThousandFilter(num) {
	return (+num || 0).toString().replace(/^-?\d+/g, m => m.replace(/(?=(?!\b)(\d{3})+$)/g, ','))
}

/**
 * Upper case first char
 * @param {String} string
 */
export function uppercaseFirst(string) {
	return string.charAt(0).toUpperCase() + string.slice(1)
}
